GD image library scripting, chromatic problems

loss of color quality

[Montbazin]

I am using the following functions in a script to reduce weight of JPEG images uploaded to a web site:

$img1=imageCreateFromJpeg($ffile); 
$img2 = imageCreate($x2,$y2); 
imageCopyResized($img2,$img1,0,0,0,0,$x2,$y2,$x1,$y1); 
imageJPEG($img2,"$ffolder/$ffname",$qual); 
imageDestroy($img1); 
imageDestroy($img2); 

As a result I obtain a quite reasonable reduction in weight of the image, but my problem is that the images become quite colorless and grayish. Is there some way to correct this?
thanks...
roberto

[jatar_k]

take a look at the page for imagecreate [php.net], they recommend using imagecreatetruecolor [php.net]. See if that makes a difference.

[Montbazin]

I have tried

imagecreatetruecolor()

but it didn't work because the don't have GD2 on my hosting server

[jatar_k]

hmmm, not sure what else to suggest

have you tried playing with the quality to see if that makes any difference?

[Montbazin]

yesy te funny thing is that when I put the quality to 100%, the result is still very bad. It tends to favorize the dominant color. If I try with a picture which has a good color balance, the result is better.

[Montbazin]

I have tried

imagecreatetruecolor()

on a different server implemented with GD2 and it seems to be the solution.
The function

imagecreate()

I had used before only handles 256 colors, but seems unable to make proper mean values in order to approach all colors.

Thanks for your help
roberto